U.S. patent application number 15/750217 was filed with the patent office on 2018-08-23 for circuit breaker tripping mechanism.
The applicant listed for this patent is SEARI ELECTRIC TECHNOLOGY CO., LTD., ZHEJIANG CHINT ELECTRICS CO., LTD.. Invention is credited to Binhua PAN, Jisheng SUN.
Application Number | 20180240636 15/750217 |
Document ID | / |
Family ID | 57942451 |
Filed Date | 2018-08-23 |
United States Patent
Application |
20180240636 |
Kind Code |
A1 |
PAN; Binhua ; et
al. |
August 23, 2018 |
CIRCUIT BREAKER TRIPPING MECHANISM
Abstract
A tripping mechanism for a circuit breaker comprises a
connecting rod assembly and a control assembly, wherein one end of
the connecting rod assembly is connected with a rotating shaft
assembly for driving the circuit breaker to be switched off in a
driving manner, and the other end of the connecting rod assembly is
provided with a jump pin which can be connected with the control
assembly in a latching manner, and the jump pin is also provided
with a U-shaped groove. The control assembly comprises a
switching-off latch which is rotatably mounted. The end part of the
switching-off latch can be connected with the U-shaped groove in a
latching and limiting manner, and the circuit breaker triggers the
end part of the switching-off latch to be tripped from the U-shaped
groove when being switched off, and therefore the rotating shaft
assembly connected with the connecting rod assembly drives the
circuit breaker to be switched off. The tripping mechanism for the
circuit breaker, which is provided by the present invention, is
stable in latching, simple in structure and accurate in action.
Inventors: |
PAN; Binhua; (Zhejiang,
CN) ; SUN; Jisheng; (Shanghai, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
ZHEJIANG CHINT ELECTRICS CO., LTD.
SEARI ELECTRIC TECHNOLOGY CO., LTD. |
Zhejiang
Shanghai |
|
CN
CN |
|
|
Family ID: |
57942451 |
Appl. No.: |
15/750217 |
Filed: |
August 2, 2016 |
PCT Filed: |
August 2, 2016 |
PCT NO: |
PCT/CN2016/092929 |
371 Date: |
February 5, 2018 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H01H 71/505 20130101;
H01H 9/20 20130101; H01H 71/0264 20130101; H01H 71/1009 20130101;
H01H 3/38 20130101; H01H 71/528 20130101; H01H 71/128 20130101;
H01H 71/12 20130101 |
International
Class: |
H01H 71/12 20060101
H01H071/12; H01H 71/10 20060101 H01H071/10; H01H 71/50 20060101
H01H071/50; H01H 9/20 20060101 H01H009/20; H01H 3/38 20060101
H01H003/38; H01H 71/02 20060101 H01H071/02 |
Foreign Application Data
Date |
Code |
Application Number |
Aug 4, 2015 |
CN |
201510470855.5 |
Claims
1. A tripping mechanism for a circuit breaker, comprising a
connecting rod assembly and a control assembly, wherein one end of
the connecting rod assembly is connected with a rotating shaft
assembly for driving the circuit breaker to be switched off in a
driving manner, and the other end of the connecting rod assembly is
provided with a jump pin which can be connected with the control
assembly in a latching manner; the jump pin is also provided with a
U-shaped groove; the control assembly comprises a switching-off
latch which is rotatably mounted; the end part of the switching-off
latch can be connected with the U-shaped groove in a latching and
limiting manner, and the circuit breaker triggers the end part of
the switching-off latch to be tripped from the U-shaped groove when
being switched off, and therefore the rotating shaft assembly
connected with the connecting rod assembly drives the circuit
breaker to be switched off.
2. The tripping mechanism for the circuit breaker according to
claim 1, wherein the control assembly further comprises a
switching-off half-shaft which can be connected with the
switching-off latch in a latching manner; two ends of the
switching-off latch are respectively provided with a latch bearing
and a latch tail end; the latch bearing is connected with the
U-shaped groove in a latching and limiting manner; the latch tail
end is connected with a semicircular plane in the middle of the
switching-off half-shaft in a latching manner.
3. The tripping mechanism for the circuit breaker according to
claim 2, wherein the edge of the jump pin is provided with a jump
pin hook; a jump pin spring is mounted between the jump pin hook
and the corresponding spring fixing shaft, and the spring fixing
shaft is mounted at one side of the latch tail end.
4. The tripping mechanism for the circuit breaker according to
claim 2, wherein an inner wall of the U-shaped groove comprises a
lower U-shaped groove plane and an upper U-shaped groove plane
which face each other; the latch bearing can be in contact and
connection with the lower U-shaped groove plane and the upper
U-shaped groove plane respectively in a process from switching-off
energy storage to switching-on energy release.
5. The tripping mechanism for the circuit breaker according to
claim 2, wherein one end of the switching-off half-shaft is
connected with a switching-off guide rod for a switching-off
operation in a driving manner; the switching-off guide rod can push
the switching-off half-shaft to rotate, such that the semicircular
plane is tripped from the latch tail end, and therefore, the latch
bearing is tripped from the U-shaped groove to finish a
switching-off operation.
6. The tripping mechanism for the circuit breaker according to
claim 5, wherein one end of the switching-off guide rod is a
switching-off guide rod trigger end which is in contact and
connection with a switching-off button, and the other end of the
switching-off guide rod is a switching-off guide rod driving end
which is in contact and connection with a switching-off plane of
the switching-off half-shaft; the switching-off guide rod is also
provided with a switching-off guide rod limiting groove configured
to guide and limit and a switching-off guide rod spring hook
configured to pull and reset.
7. The tripping mechanism for the circuit breaker according to
claim 5, wherein the other end of the switching-off half-shaft is
provided with a switching-off half-shaft limiting plane which is in
contact and connection with a switching-on guide rod; a
switching-on guide rod positioning hole is formed in the middle of
the switching-on guide rod; one end of the switching-on guide rod
is provided with a switching-on guide rod limiting boss which is in
contact and connection with the switching-off half-shaft limiting
plane, and the other end of the switching-on guide rod is in
contact and connection with the switching-on half-shaft for a
switching-on operation; the switching-off half-shaft limiting plane
can push the switching-on guide rod limiting boss from bottom to
top to drive the switching-on guide rod to rotate around the
switching-on guide rod positioning hole, thereby enabling the end
part of the switching-on guide rod to move to one side of the
switching-on half-shaft.
8. The tripping mechanism for the circuit breaker according to
claim 6, wherein the switching-off half-shaft is provided with a
switching-off half-shaft driving plane which is in contact and
connection with a tripping system of the circuit breaker; the
tripping system can drive the switching-off half-shaft driving
plane to drive the switching-off half-shaft to rotate; the
switching-off half-shaft driving plane and the switching-off plane
are respectively arranged at two ends of the switching-off
half-shaft and are relatively perpendicular in position.
9. The tripping mechanism for the circuit breaker according to
claim 1, wherein the connecting rod assembly comprises a jump pin,
a first connecting rod and a second connecting rod which are
rotatably connected in sequence; the end part of the second
connecting rod is connected with the rotating shaft assembly in a
driving manner to pull the rotating shaft assembly to finish the
switching-on/switching-off operation; the jump pin is of a
quadrangular structure, wherein four end parts of the quadrangular
structure are sequentially provided with a jump pin connecting end
connected with the first connecting rod, a U-shaped groove
connected with the control assembly in a latching manner, a jump
pin hook connected with the jump pin spring and a jump pin mounting
hole connected with the driving shaft.
10. The tripping mechanism for the circuit breaker according to
claim 9, wherein the jump pin is arranged at one side of the first
connecting rod, and the energy storage assembly for storing energy
is also arranged at the other side of the first connecting rod; the
jump pin always moves at one side of the first connecting rod; the
energy storage assembly comprises an energy storage lever mounted
on the energy storage mounting shaft; the main tension springs for
switching off and resetting the rotating shaft assembly are also
mounted between the energy storage mounting shaft and the
connecting pin.
Description
TECHNICAL FIELD
[0001] The present invention relates to the field of low-voltage
apparatuses, and more particularly to a tripping mechanism for a
circuit breaker.
BACKGROUND ART
[0002] At present, an operation mechanism of a molded case circuit
breaker is usually of a manual pick-and-push type, and if a user
requires an electric operation, an external electric operation
attachment is often provided to be mounted outside the circuit
breaker to electrically and remotely control the function of the
circuit breaker. However, for a high-capacity molded case circuit
breaker, the external operation mechanism attachment tends to have
a larger volume and weight, and thus have higher requirements for
the mounting quality. In particular, when the operation mechanism
cooperates with a circuit breaker body, the substantial impact
vibration easily causes failure of key parts such as a circuit
breaker housing and a locking device. Therefore, the external
operation mechanism attachment of the existing molded case circuit
breaker has huge volume, heavy weight and poor reliability. In
addition, the previous energy pre-storage operation mechanism is
only used on an air circuit breaker, and cannot be applied to the
molded case circuit breaker and interchanged with the existing
manual pick-and-push type operation mechanism to meet different
market needs. Therefore, it is urge to need a novel energy
pre-storage operation mechanism built in the circuit breaker to
realize intelligent control of the circuit breaker. The operation
mechanism has the same mounting way and tripping position as the
manual pick-and-push type operation mechanism, realizes the
interchange with the manual pick-and-push type operation mechanism,
meets the needs of different users, and is capable of overcoming
the defects of huge volume, heavy weight, high cost and poor
reliability of the manual pick-and-push operation mechanism because
the circuit breaker is equipped with an external electric operation
attachment.
SUMMARY OF THE INVENTION
[0003] An objective of the present invention is to overcome the
defects of the prior art and provide a tripping mechanism for a
circuit breaker, which is stable in latching, simple in structure
and accurate in action.
[0004] To fulfill said objective, the present invention adopts the
following technical solution.
[0005] A tripping mechanism for a circuit breaker comprises a
connecting rod assembly 2 and a control assembly 6, wherein one end
of the connecting rod assembly 2 is connected with a rotating shaft
assembly 5 for driving the circuit breaker to be switched off in a
driving manner, and the other end of the connecting rod assembly 2
is provided with a jump pin 21 which may be connected with the
control assembly 6 in a latching manner. In addition, the jump pin
21 is also provided with a U-shaped groove 213. The control
assembly 6 comprises a switching-off latch 62 which is rotatably
mounted. The end part of the switching-off latch 62 may be
connected with the U-shaped groove 213 in a latching and limiting
manner, and the circuit breaker triggers the end part of the
switching-off latch 63 to be tripped from the U-shaped groove 213
when being switched off, and therefore the rotating shaft assembly
5 connected with the connecting rod assembly 2 drives the circuit
breaker to be switched off.
[0006] Further, the control assembly 6 further comprises a
switching-off half-shaft 61 which may be connected with the
switching-off latch 62 in a latching manner. Two ends of the
switching-off latch 62 are respectively provided with a latch
bearing 622 and a latch tail end 623. The latch bearing 622 is
connected with the U-shaped groove 213 in a latching and limiting
manner. The latch tail end 623 is connected with a semicircular
plane 611 in the middle of the switching-off half-shaft 61 in a
latching manner.
[0007] Further, the edge of the jump pin 21 is provided with a jump
pin hook 211. A jump pin spring 25 is mounted between the jump pin
hook 211 and a corresponding spring fixing shaft, and the spring
fixing shaft is mounted to one side of the latch tail end 623.
[0008] Further, an inner wall of the U-shaped groove 213 comprises
a lower U-shaped groove plane 2131 and an upper U-shaped groove
plane 2132 which face each other. The latch bearing 622 may be in
contact and connection with the lower U-shaped groove plane 2131
and the upper U-shaped groove plane 2132 respectively in a process
from switching-off energy storage to switching-on energy
release.
[0009] Further, one end of the switching-off half-shaft 61 is
connected with a switching-off guide rod 73 for a switching-off
operation in a driving manner. The switching-off guide rod 73 may
push the switching-off half-shaft 61 to rotate, such that the
semicircular plane 61 is tripped from the latch tail end 623, and
therefore, the latch bearing 622 is tripped from the U-shaped
groove 213 to finish a switching-off operation.
[0010] Further, one end of the switching-off guide rod 73 is a
switching-off guide rod trigger end 731 which is in contact and
connection with a switching-off button 66, and the other end of the
switching-off guide rod 73 is a switching-off guide rod driving end
732 which is in contact and connection with a switching-off plane
615 of the switching-off half-shaft 61. In addition, the
switching-off guide rod 73 is also provided with a switching-off
guide rod limiting groove 733 configured to guide and limit and a
switching-off guide rod spring hook 734 configured to pull and
reset.
[0011] Further, the other end of the switching-off half-shaft 61 is
provided with a switching-off half-shaft limiting plane 612 which
is in contact and connection with a switching-on guide rod 72. A
switching-on guide rod positioning hole 721 is formed in the middle
of the switching-on guide rod 72. One end of the switching-on guide
rod 72 is provided with a switching-on guide rod limiting boss 725
which is in contact and connection with the switching-off
half-shaft limiting plane 612, and the other end of the
switching-on guide rod 72 is in contact and connection with the
switching-on half-shaft 63 for a switching-on operation. The
switching-off half-shaft limiting plane 612 can push the
switching-on guide rod limiting boss 725 from bottom to top to
drive the switching-on guide rod 72 to rotate around the
switching-on guide rod positioning hole 725, thereby enabling the
end part of the switching-on guide rod 72 to move to one side of
the switching-on half-shaft 63.
[0012] Further, the switching-off half-shaft 61 is provided with a
switching-off half-shaft driving plane 616 which is in contact and
connection with a tripping system of the circuit breaker. The
tripping system can drive the switching-off half-shaft driving
plane 616 to drive the switching-off half-shaft 61 to rotate. The
switching-off half-shaft driving plane 616 and a switching-off
plane 615 are respectively arranged at two ends of the
switching-off half-shaft and are relatively perpendicular in
position.
[0013] Further, the connecting rod assembly 2 comprises a jump pin
21, a first connecting rod 22 and a second connecting rod 23 which
are rotatably connected in sequence. The end part of the second
connecting rod 23 is connected with the rotating shaft assembly 5
in a driving manner to pull the rotating shaft assembly 5 to finish
switching-on and switching-off operations. The jump pin 21 is of a
quadrangular structure, wherein four end parts of the quadrangular
structure are sequentially provided with a jump pin connecting end
214 connected with the first connecting rod 22, a U-shaped groove
213 connected with the control assembly 6 in a latching manner, a
jump pin hook 211 connected with a jump pin spring 25 and a jump
pin mounting hole 210 connected with the driving shaft 30.
[0014] Further, the jump pin 21 is arranged at one side of the
first connecting rod 22, and the energy storage assembly 4 for
storing energy is also mounted to the other side of the first
connecting rod 22. The jump pin 21 always moves at one side of the
first connecting rod 22. The energy storage assembly 4 comprises an
energy storage lever 42 mounted on the energy storage mounting
shaft 41. The main tension springs 49 for switching off and
resetting the rotating shaft assembly 5 are also mounted between
the energy storage mounting shaft 41 and the connecting pin 54.
[0015] By the cooperative limiting and latching connection of the
switching-off latch and the U-shaped groove, the tripping mechanism
for the circuit breaker of the present invention realizes stable
connection in the latching process, and improves the sensitivity in
switching-off tripping and the use efficiency of the tripping
mechanism at the same time.
BRIEF DESCRIPTION OF THE DRAWINGS
[0016] FIG. 1 is a schematic structural drawing of the present
invention;
[0017] FIG. 2 is an exploded structural drawing of the present
invention;
[0018] FIG. 3 is a schematic structural drawing of a side plate
assembly of the present invention;
[0019] FIG. 4 is a schematic structural drawing of a rotating shaft
assembly of the present invention;
[0020] FIG. 5 is a schematic structural drawing of a cam assembly
of the present invention;
[0021] FIG. 6 is a schematic structural drawing of a connecting rod
assembly of the present invention;
[0022] FIG. 7 is a schematic structural drawing of an embodiment of
an energy storage assembly of the present invention;
[0023] FIG. 8 is a flowchart of a switching-on/switching-off
process state according to the present invention;
[0024] FIG. 9 is a schematic drawing of an interchanged structure
according to the present invention;
[0025] FIG. 10 is a schematic drawing of a mounting structure of a
contact system provided with a manual operation mechanism according
to the present invention;
[0026] FIG. 11 is a schematic drawing of a mounting structure of a
contact system provide with an energy storage operation mechanism
according to the present invention;
[0027] FIG. 12 is a schematic structural drawing of a switching-off
half-shaft according to the present invention;
[0028] FIG. 13 is a schematic structural drawing of a switching-off
latch according to the present invention;
[0029] FIG. 14 is a schematic structural drawing of a switching-on
half-shaft according to the present invention;
[0030] FIG. 15 is a schematic structural drawing of a switching-on
latch according to the present invention;
[0031] FIG. 16 is a schematic structural drawing of an interlocking
guide rod according to the present invention;
[0032] FIG. 17 is a front schematic structural drawing of a
switching-on guide rod according to the present invention;
[0033] FIG. 18 is a schematic structural drawing of a switching-off
guide rod according to the present invention;
[0034] FIG. 19 is a schematic structural drawing of a driving guide
rod according to the present invention;
[0035] FIG. 20 is a structural state drawing when a connecting rod
assembly is in a switching-off energy release state according to
the present invention;
[0036] FIG. 21 is a structural state drawing when the connecting
rod assembly is in a switching-off energy storage state according
to the present invention;
[0037] FIG. 22 is a structural state drawing when the connecting
rod assembly in a switching-on energy release state according to
the present invention;
[0038] FIG. 23 is a structural state drawing when an interlocking
assembly is in a switching-off energy release state according to
the present invention;
[0039] FIG. 24 is a structural state drawing when the interlocking
assembly is in a switching-off energy storage state according to
the present invention;
[0040] FIG. 25 is another structural state drawing when the
interlocking assembly is in a switching-off energy storage state
according to the present invention;
[0041] FIG. 26 is a structural state drawing when the interlocking
assembly is in a switching-on energy release state according to the
present invention;
[0042] FIG. 27 is a structural state drawing when the interlocking
assembly is in a switching-on energy storage state according to the
present invention;
[0043] FIG. 28 is a structural side view when the energy storage
assembly stores energy according to the present invention;
[0044] FIG. 29 is a structural side view when the energy storage
assembly releases energy according to the present invention;
[0045] FIG. 30 is a schematic structural drawing of another
embodiment of the energy storage assembly according to the present
invention; and
[0046] FIG. 31 is a schematic structural drawing of an embodiment
of a hitting pin according to the present invention.
DETAILED DESCRIPTION
[0047] Specific embodiments of a tripping mechanism for the circuit
breaker of the present invention will be further described below
with reference to the examples of the present invention provided by
FIGS. 1 to 31. The tripping mechanism for the circuit breaker of
the present invention is not limited to the description of the
following examples.
[0048] The energy storage operation mechanism 99 comprises a side
plate assembly 1, a connecting rod assembly 2, a cam assembly 3, an
energy storage assembly 4, a rotating shaft assembly 5, a control
assembly 6, an interlocking assembly 7 and a handle assembly 8. The
connecting rod assembly 2 and the cam assembly 3 in FIG. 1 and FIG.
2 are mounted on a driving shaft 30. One end of the connecting rod
assembly 2 is connected with the rotating shaft assembly 5 in a
driving manner, and the other end thereof may be connected with the
control assembly 6. The rotating shaft assembly 5 may also be
coupled to a contact system 96 of the circuit breaker. The end part
of the energy storage assembly 4 may be in contact and connection
with the cam assembly 3 and the connecting rod assembly 2
respectively. The control assembly 6 may also be connected with the
interlocking assembly 7 in a driving manner. An interlocking device
formed by the matching of the control assembly 6 and the
interlocking assembly 7 can drive the cam assembly 3, the
connecting rod assembly 2 and the energy storage assembly 4 to
actuate, thereby finishing a switching-on process or a
switching-off process of the energy storage operation mechanism 99.
In addition, the rotating shaft assembly 5 and the energy storage
assembly 4 are mounted to one side of the driving shaft 30. The
control assembly 6 and the interlocking assembly 7 are mounted to
the other side of the driving shaft 30. The energy storage
operation mechanism of the present invention is used in a molded
case circuit breaker and may be interchanged with a manual
operation mechanism of the molded case circuit breaker, and is
connected with the circuit breaker via the side plate assembly 1.
The energy storage assembly 4 comprises an energy storage lever 42
and an energy storage spring 48 connected with the energy storage
lever 42, wherein one end of the energy storage spring 48 is
mounted to one side of the side plate assembly 1, which is
connected with the circuit breaker, and the other end of the energy
storage spring 48 is connected with one end of the energy storage
lever 42. The energy storage lever 42 and the energy storage spring
48 are in an L shape and rotatably arranged at one side of the side
plate assembly 1 away from the circuit breaker. The connecting rod
assembly 2 and the cam assembly 3 are mounted on the driving shaft
30 and located below the energy storage lever 42. The rotating
shaft assembly 5 is arranged between the energy storage spring 48
and the driving shaft 30. One end of the connecting rod assembly 2
is connected with the rotating shaft assembly 5, and the other end
thereof is also connected with the control assembly 6 for
controlling the switching-on process or the switching-off process.
The driving shaft 30 is arranged between the rotating shaft
assembly 5 and the control assembly 6. The energy storage operation
mechanism of the present invention is used in the molded case
circuit breaker and is compact in structure and convenient to
assemble and mount, thereby improving the use efficiency.
Meanwhile, the energy storage operation mechanism of the present
invention is improved in the design layout of the components, which
is different from the layout of an energy storage operation
mechanism of a universal circuit breaker. An energy storage
assembly and a rotating shaft assembly of the existing universal
circuit breaker are arranged at two sides of a driving shaft
respectively, but because ,the energy storage assembly, i.e., the
energy storage assembly in the present invention, needs to keep the
connecting rod assembly away when the energy storage operation
mechanism of the present invention is used in the molded case
circuit breaker, the layout of components is redesigned in the
present invention, i.e., the energy storage assembly and the
rotating shaft assembly are arranged at one side, and the energy
storage assembly is arranged at the upper part of the operation
mechanism and located above the connecting rod assembly and the cam
assembly. Therefore, the action requirements of the assemblies of
the energy storage operation mechanism are satisfied, and the
operating stability of the energy storage operation mechanism is
improved.
[0049] The energy storage operation mechanism 99 of the present
invention has four operating states, i.e., a switching-off energy
release state, a switching-off energy storage state, a switching-on
energy release state and a switching-on energy storage state as
shown in FIG. 8 respectively.
[0050] Specifically, when the energy storage operation mechanism 99
is in the switching-off energy release state, the driving shaft 30
is driven by the handle assembly 8 to rotate, thereby driving the
cam assembly 3 to rotate; the cam assembly 3 jacks the energy
storage lever 42 in a rotating process, such that the energy
storage assembly 4 stores energy, and meanwhile, the switching-on
latch 64 of the control assembly 6 pushes the cam assembly 3 to
further finish energy storage when the cam assembly 3 rotates in
place. In addition, the energy storage lever 42 no longer extrudes
the connecting rod assembly 2, and the rotating shaft assembly 2
rotates to make a latch bearing 622 at the end part of the
switching-off latch 62 slide into a U-shaped groove 213 of the
connecting rod assembly 2, such that the energy storage operation
mechanism 99 is converted into the switching-off energy storage
state as shown in FIG. 21.
[0051] When the energy storage operation mechanism 99 is in the
switching-off energy storage state, a switching-on button 65 is
pushed, such that a switching-on guide rod of the interlocking
assembly 7 drives the switching-on half-shaft 63 to enable the
switching-on latch 64 to be tripped from the cam assembly 3, the
energy storage assembly 4 releases energy and hits the connecting
rod assembly 2 to pull the rotating shaft assembly 5 to finish the
switching-on operation; in addition, the latch bearing 622 pushes
the U-shaped groove 213 to stop the connecting rod assembly 2 from
rotating and resetting, such that the energy storage operation
mechanism 99 is converted into the switching-on energy release
state as shown in FIG. 22.
[0052] When the energy storage operation mechanism 99 is in the
switching-on energy release state, the following two operations may
be selected. In the first operation, after the switching-off button
66 is pushed, the switching-off half-shaft 61 is driven by the
switching-off guide rod 73 to make the latch bearing 622 of the
switching-off latch 62 separate from the U-shaped groove 213, and
further no longer stop the connecting rod assembly 2 from
resetting; the connecting rod assembly 2 drives the rotating shaft
assembly 5 to rotate to finish a switching-off operation under a
restoring force of main tension springs 49, and the energy storage
assembly 4 extrudes the connecting rod assembly 2 again, such that
the energy storage operation mechanism 99 at this moment is
converted into the switching-off energy release state as shown in
FIG. 20.
[0053] In the second operation, when the energy storage operation
mechanism 99 is in the switching-on energy release state, the
handle assembly 8 is pulled to finish the energy storage to the
energy storage assembly 4; the energy storage operation mechanism
99 at this moment is converted to the switching-on energy storage
state, wherein the connecting rod assembly 2 is in a state the same
as the state in the switching-on energy release in FIG. 22, and the
state of the interlocking assembly is as shown in FIG. 27. At this
moment, the switching-off button 66 is pushed to finish a
switching-off process of the first operation. In addition, because
the energy storage lever 42 no longer extrudes the connecting rod
assembly 2 after the energy storage assembly 4 stores energy, such
that the latch bearing 622 is still placed in the U-shaped groove
213 after the connecting rod assembly 2 drives the rotating shaft
assembly 5 to rotate to finish the switching-off operation, and
further the energy storage operation mechanism 99 is directly
converted into the switching-off energy storage state as shown in
FIG. 21. After the switching-on button 65 is pushed again, the
switching-on operation can be finished without an energy storage
step, and further the use efficiency of the circuit breaker is
improved.
[0054] The side plate assembly 1 in FIG. 2 comprises a first side
plate 11 and a second side plate 12 which face each other. The
connecting rod assembly 2, the cam assembly 3, the energy storage
assembly 4, the control assembly 6a and the interlocking assembly 7
may be mounted in a mounting space formed between the first side
plate 11 and the second side plate 12. At lease one side plate
fastening shaft 16 for fixedly connecting the first side plate 11
and the second side plate 12 is arranged therebetween in FIG. 3,
and preferably, three side plate fastening shafts 16 are arranged
between the first side plate 11 and the second side plate, and
projections of the three side plate fastening shafts 16 on the
first side plate 11 or the second side plate 12 are distributed
triangularly. The triangularly distributed side plate fastening
shafts ensure corresponding accurate connection between the first
side plate and the second side plate, thereby improving the
mounting reliability of the operation mechanism for the circuit
beaker. Two ends of the driving shaft 30 are correspondingly
connected with driving shaft mounting holes 101 formed in the first
side plate 11 and the second side plate 12 respectively in a
hole-shaft manner. An energy storage indicator 75 and a
switching-on/switching-off indicator 67 are rotatably mounted on
the first side plate 11 and the second side wall 12 respectively. A
first bearing 55 and a second baring 56 are arranged on the
rotating shaft assembly 5 in FIG. 2 side by side. The rotating
shaft assembly 5 is capable of rotating via the first bearing 55
and the second bearing 56. The first bearing 55 and the second
bearing 56 are mounted in rotating shaft mounting notches 102
formed in the first side plate 11 and the second side wall 12
respectively. Each rotating shaft mounting notch 102 is of a
U-shaped structure and arranged on the side edge of each of the
first side plate 11 and the second side plate 11, which is
connected with the molded case circuit breaker. In particular, the
rotating shaft assembly 5 and the energy storage assembly 4 are
arranged at one side of the mounting space, the control assembly 6
and the interlocking assembly 7 are arranged at the other side of
the mounting space, the connecting rod assembly 2 and the cam
assembly 3 are mounted in the middle of the mounting space by the
driving shaft 30, and the energy storage assembly 4 and the energy
storage lever 42 upon which the connecting rod assembly 2 and the
cam assembly 3 cooperatively act are located between the connecting
rod assembly 2 and the cam assembly 3.
[0055] The operation mechanism for the circuit breaker of the
present invention may be an interchanged operation mechanism. The
interchanged operation mechanism comprises an energy storage
operation mechanism 99 which is connected and mounted on a contact
system 96 of a molded case circuit breaker (as shown in FIG. 11),
or a manual operation mechanism 98 is connected to the contact
system 96 in a driving manner instead of the energy storage
operation mechanism 99 (as shown in FIG. 10). The contact system 96
of the molded case circuit breaker is located at one side of the
molded case circuit breaker, and a tripping system is located at
the other side of the molded case circuit breaker. The rotating
shaft assembly 5 and the control assembly 6 on the interchanged
operation mechanism in FIG. 9 correspond to the contact system 96
and the tripping system at two sides of the molded case circuit
breaker respectively. A coupling connecting rod 961 which can drive
a movable contact to act is arranged on the contact system 96, and
the rotating shaft assembly 5 may be directly connected with the
coupling connecting rod 961 in a driving manner. The control
assembly 6 may be connected with the corresponding tripping system
in a driving manner. The tripping system may drive the rotating
shaft assembly 5 via the control assembly 6 to enable the contact
system 96 to be switched off. The rotating shaft assembly 5 is
provided with at least one driving mounting hole 512. The coupling
connecting rod 961 is provided with a coupling mounting hole 962
which is correspondingly connected to the driving mounting hole 512
in a driving manner via a driving pin, and particularly, the shape
of the coupling mounting hole 962 may be a circular hole having an
enclosed structure. Furthermore, clamp springs for limiting and
mounting are also arranged at two ends of the driving pin. The
energy storage operation mechanism 99 comprises the side plate
assembly 1. The side surface of the side plate assembly 1 in FIG. 1
is provided with a mechanism mounting hole 15. The side plate
assembly 1 may be fixedly connected with the contact system 96 via
the mechanism mounting hole 15. The rotating shaft assembly 5 and
the control assembly 6 of the energy storage operation mechanism 99
may be connected with the contact system 96 in a coupling manner.
The contact system 96 is further provided with a fastening screw 97
which may be correspondingly matched and connected with the
mechanism mounting hole 15. The energy storage operation mechanism
provided by the present invention may be designed based on the
molded case circuit breaker, a thermomagnetic tripping device in a
tripper and a magnetic flux tripper of an electronic controller are
located at one side of the contact system 96. If the existing
energy storage device operation mechanism in which the control
assembly 6 and the rotating shaft assembly 5 are mounted on the
same side is adopted, the thermomagnetic tripping device is far
away from the control assembly 6, which is not advantageous for the
switching-on operation or the switching-off operation and affects
the the operating stability of the circuit breaker. Therefore, in
order to realize the interchange between the energy storage
operation mechanism 99 and the manual operation mechanism 98 and
satisfy the requirement that the two operation mechanisms have the
same tripping position and tripping way, the control assembly 6 of
the energy storage operation mechanism 99 in the present invention
is placed at the lower end, and the energy storage assembly 4 is
place at the upper end, and therefore the design requirement is
achieved.
[0056] The rotating shaft assembly 5 comprises a main shaft 50
mounted on the side plate assembly 1. A first cantilever 51, a
second cantilever 52 and a third cantilever 53 are arranged in the
middle of the main shaft 50. A fourth cantilever 57 and a fifth
cantilever 58 are also arranged at two ends of the main shaft 50
respectively, and a first bearing 55 and a second bearing 56 which
are used for connecting the rotating shaft assembly 5 and the side
plate assembly 1 and are adjacent to the second cantilever 52 and
the third cantilever 53 respectively are arranged on the main shaft
50. The first cantilever 51 in FIG. 4 is provided with a connecting
rod mounting hole 511 and a driving mounting hole 512. The
connecting rod mounting hole 511 is rotatably connected with the
end part of the connecting rod assembly 2 in a hole-shaft manner
via a connecting pin 54 in FIG. 2. The driving mounting hole 512 is
connected with the contact system 96 of the circuit breaker in a
coupling manner. The connecting rod assembly 2 acts to drive the
rotating shaft assembly 5 to rotate, thereby driving the contact
system 96 to finish a switching-on/switching-off process. The
connecting pin ensures the stable connection between the connecting
rod assembly and the connecting rod mounting hole. The driving
mounting hole 512 is formed in one end of the first cantilever 51,
and the other end of the first cantilever 51 is connected to the
main shaft 50 of the rotating shaft assembly 5. The connecting rod
mounting hole 511 is formed in one side of the middle of the first
cantilever 51. The positional relationship of the connecting rod
mounting hole and the driving mounting hole ensures the rotating
accuracy of the rotating shaft assembly in the switching-on process
or the switching-off process, and meanwhile enables the rotation
process to be more smooth and stable and improves the operating
reliability of the rotating shaft assembly. The first cantilever 52
and the third cantilever 53 on the main shaft 50 are arranged at
two sides of the first cantilever 51 respectively. The second
cantilever 52 may be matched and connected with an interlocking
guide rod 71 of the interlocking assembly 7. The interlocking guide
rod 71, the connecting rod assembly 2 and the cam assembly 3 are
mounted on the driving shaft 30 simultaneously. The third
cantilever 53 may be matched and connected with a switching-on/off
indicator 67. Preferably, the fourth cantilever 57 and the fifth
cantilever 58 are also arranged at two sides of the main shaft 50.
Each of the fourth cantilever 57 and the fifth cantilever 58 are
also provided with a driving mounting hole 512 which may be
connected with the contact system 96 in a coupling manner. The
contact system 96 comprises three groups of single-phase contact
systems 96, and the first cantilever 51, the fourth cantilever 57
and the fifth cantilever 58 are connected with the three groups of
single-phase contact systems respectively in a driving manner.
[0057] The cam assembly 3 comprises a first cam group 31 and a
second cam group 32 which are coaxially and fixedly mounted on the
driving shaft 30. The first cam group 31 and the second cam group
32 are identical in structure and each comprises a disc 34 and a
cam 33. The disc 34 and the cam 33 in FIG. 5 are fixedly connected
by a cam rivet 36. The edge of the cam 33 may be in contact and
connection with the energy storage lever 42 of the energy storage
assembly 4. A circular surface 341 of the disc 34 may also be
provided with a disc notch 342 which may be in contact and
connection with a circular indicator surface 752 of the energy
storage indicator 75, and a cam roller 35 which is capable of
rotating relatively is clamped between the disc 34 and the cam 33
and may be in contact and connection with the switching-on latch 64
of the control assembly 6. Specifically, the cam 33 pushes the
energy storage lever 42 to store energy by extruding an energy
storage bearing 43 mounted to the end part of the energy storage
lever 42, and then the switching-on latch 64 pushes the cam roller
35 to perform locking, thereby finishing energy storage finally. An
interlocking guide rod 71 and the connecting rod assembly 2 which
are mounted on the driving shaft 30 are also arrange between the
first cam group 31 and the second cam group 32. Two ends of the
interlocking guide rod 71 may be correspondingly in contact and
connection with the second cantilever 52 of the rotating shaft
assembly 5 and the switching-on guide rod 72 of the interlocking
assembly 7 respectively. A shaft sleeve 37 is also arranged between
the interlocking guide rod 71 and the driving shaft 30. The
interlocking guide rod 71 is capable of rotating around the shaft
sleeve 37. The interlocking guide hole 71 is also provided with an
interlocking guide rod spring hanging hole 715 for mounting an
interlocking guide rod resetting spring. The cam assembly is
compact in design structure and convenient to mount, and stable in
rotation process at the same time. In addition, various components
mounted on the driving shaft rotate in a synchronous fit manner,
and therefore the efficiency of the switching-on process or the
switching-off process is improved.
[0058] The connecting rod assembly 2 comprises a second connecting
rod 23, a first connecting rod 22 and a jump pin 22 which are
connected in sequence, and the second connecting rod 23 and the
first connecting rod 22, as well as the first connecting rod 22 and
the jump pin 21 are rotatably connected with each other,
respectively. The jump pin 21 is kept rotating at one side of the
first connecting rod 22 around the end part of the first connecting
rod 22. The actions of the jump pin and the first connecting rod
are not interfered with each other, so that the the action way of
the connecting rod assembly is simple and accurate. Two ends of the
first connecting rod 22 in FIG. 6 are rotatably connected with the
jump pin 21 and the second connecting rod 23 respectively. The jump
pin 21 is provided with a jump pin mounting hole 210 which can be
connected in a manner of passing through the driving shaft 30. A
jump pin hook 21 which may be considered as a driving portion and a
jump pin spring 25 for driving the jump pin 21 to rotate relative
to the driving shaft are also arranged on the jump pin 21. The end
part of the second connecting rod 23 is provided with a connecting
rod driving hole 232 which may be connected with the connecting rod
mounting hole 511 in a hole-shaft manner via a connecting pin 54.
In addition, main tension springs 49 which are used for resetting
the position states of the first connecting rod 22 and the second
connecting rod 23 are mounted on the connecting pin 54 in FIG. 20.
A hitting roller 24 which may be in contact and connection with the
hitting pin 44 of the energy storage assembly 4 and may be
considered as a trigger portion is mounted on the first connecting
rod 22. The driving shaft 30 may drive the cam 33 to rotate and
extrude the energy storage assembly 4 to finish energy storage. The
energy storage assembly 4 may hit the hitting roller 24 while
releasing energy, such that the second connecting rod 23 pulls the
rotating shaft assembly 5 to rotate via the connecting pin 54 to
finish a switching-on operation. Particularly, the first connecting
rod 22 comprises two first connecting rod mounting sheets 221 which
are mounted side by side. The hitting roller 24 is clamped between
the two first connecting rod mounting sheets 221 and capable of
rotating relative to the first connecting mounting sheets 221. The
second connecting rod 23 comprises two second connecting rod
mounting sheets 231 which are mounted side by side. The end part of
each of the two connecting rod mounting sheets 231 is
correspondingly provided with a connecting rod driving hole 232,
and the corresponding end parts of the two first connecting rod
mounting sheets 221 and the two second connecting rod mounting
sheets 231 are pivotally connected via a connecting rod connecting
pin 216 respectively. The jump pin 21 is provided with a jump pin
connecting end 214 which is connected and mounted between the
corresponding end parts of the first connecting rod mounting sheets
221. The first connecting rod and the second connecting rod which
are formed by way of the mounting sheets are firm in structure and
stable in pivotal connection. Furthermore, The edge of the first
connecting rod 22, which corresponds to one side of the driving
shaft 30, may be in contact and connection with the shaft sleeve 37
on the driving shaft 30.
[0059] The jump pin 21 is also provided with a U-shaped groove 213
which is used for limiting and connecting the switching-off latch
62 of the control assembly 6. One side of the jump pin 21, which is
provided with the U-shaped groove 213, is also provided with a jump
pin connecting end 214 which is rotatably connected with the
corresponding end part of the first connecting rod 22.
Specifically, a jump pin spring 25 configured to pull and reset is
mounted on the jump pin hook 211. One end of the jump pin spring 25
is mounted on the jump pin hook 211, and the other end there of is
mounted on the side plate assembly 1. The jump pin is pulled and
reset by means of one jump pin spring on the jump pin hook.
Compared with the exiting energy operation mechanism in which the
jump pin is pulled and reset by two springs at two sides, the jump
pin spring mounting structure in the present invention is simple
and avoids the rubbing with other components of the connecting rod
assembly and the energy storage assembly in the action process at
the same time, and further reduces the fault rate of the energy
storage operation mechanism and prolongs the service life of the
energy storage operation mechanism. In addition, the end part of
the switching-off latch 62 is provided with a latch bearing 622
which is matched an connected with the U-shaped groove 231 in a
limiting manner. An inside wall of the U-shaped groove 213
comprises an upper U-shaped groove plane 2131 and a lower U-shaped
groove plane 2132 which face each other. The jump pin 21 may be
driven by the jump pin spring 25 to rotate along the jump pin
mounting hole 210 in the process from switching-off energy release
to switching-off energy storage, such that the latch bearing 622 at
the end part of the switching-off latch 62 slides into the U-shaped
groove 213 along a first jump pin contour surface 212 at the side
surface of the jump pin 21 to finish limiting connection, and
meanwhile, the lower U-shaped groove plane 2131 is in contact and
connection with the latch bearing 622 in the switching-off energy
storage state. The upper U-shaped groove plane 2132 may be in
contact and connection with the latch bearing 622 in the
switching-on state. The latch bearing 622 in the switching-off
energy release state may be in contact with the first jump pin
contour surface 212 at one side, where the U-shaped groove 213 is
formed, of the jump pin 21. During energy storage, the jump pin
pushes the latch bearing through the U-shaped groove to realize
limiting. Compared to most ways in which the energy storage
operation mechanism is limited by other fixing shafts , the
limiting and latching way of the jump pin in the present invention
is simple in structure an stable in latching and effectively
improves the action reliability of the jump pin in the switching-on
process or the switching-off process.
[0060] The jump pin 21 may be of a polygonal structure, and the
jump pin hook 211 and the U-shaped groove 213 are arranged at two
sides of the jump pin 21 respectively. FIG. 6 illustrates a
specific structure embodiment of the jump pin 21. In the present
embodiment, the jump pin 21 is of a quadrangular structure, and the
jump pin mounting hole 210, the jump pin connecting end 214, the
U-shaped groove 213 and the jump pin hook 211 are distributed at
four vertexes of the quadrangular jump pin 21 clockwise
respectively in sequence. The shape of the jump pin 21 is not
limited to the above-described quadrangular structure embodiment
but may be a triangular structure, i.e., the jump pin connecting
end 214, the U-shaped groove 213 and the jump pin hook 211 are
distributed at three vertexes of the triangular jump pin 21
clockwise in sequence, and the jump pin mounting hole 210 is
provided in a connecting line between the jump pin connecting end
214 and the jump pin hook 211. The triangular jump pin is simple in
structure, and convenient to mount and machine. Meanwhile, the
positional layout of the jump pin mounting hole, the jump pin
connecting end, the U-shaped groove and the jump pin hook also
ensures that the connecting rod assembly operates without
interfering with each other.
[0061] The energy storage assembly 4 comprises an energy storage
lever 42, an energy storage spring 48 and a base support 46,
wherein one end of the energy storage spring 48 is fixedly mounted
on the base support 46, and the other end of the energy storage
spring 48 is connected with the energy storage lever 42. One end of
the energy storage lever 42 in FIG. 7 is provided with an energy
storage end of the energy storage spring 48, and the other end of
the energy storage lever 42 is a driving end which may be in
contact and connection with the cam assembly 3. A lever fulcrum at
which an energy storage mounting shaft 41 may be mounted is also
arranged in the middle of the energy storage lever 42, and an
external force may be applied to the driving end, such that the
energy storage lever 42 rotates around the energy storage mounting
shaft 41 to finish energy storage of the energy storage end. The
edge of the cam 33 of the cam assembly 3 may be in contact and
connection with the energy storage spring 43 mounted at the side
surface of the driving end of the energy storage lever 42. The
driving shaft 30 can drive the cam 33 to rotate and drive the edge
of the cam 33 to push the energy storage bearing 43, such that the
energy storage lever 42 rotates around the energy storage mounting
shaft 41, thereby compressing the energy storing spring 48 at the
energy storage end to finish energy storage. Preferably, the first
cam group 31 and the second cam group 32 which are identical in
structure are mounted on the driving shaft 30 side by side and may
be in contact and connection with energy storage bearings 43 at two
sides of the driving end of the energy storage lever 42
respectively. Furthermore, the energy storage lever 42 may also be
provided with the hitting pin 44 which corresponds to the hitting
roller 24 of the connecting rod assembly 2. The hitting pin 44 is
in a circular shape as shown in FIG. 7, or may be a hitting pin 44
having a kidney-shaped section as shown FIG. 30 and FIG. 31. The
widths of two ends of the hitting pin 44 having the kidney-shaped
section are smaller than the width of the middle part, and
therefore, the switching-on stroke and the switching-on efficiency
are ensured.
[0062] A rotatable driving shaft 30 is arranged at one side of the
energy storage lever 42. The connecting rod assembly 2 and the cam
assembly 3 are arranged on the driving shaft 30. The cam assembly 3
may be in contact and connection with the driving end of the energy
storage lever 42 and pushes the energy storage lever 42, such that
the energy storage end stores energy. The connecting rod assembly 2
may be in contact and connection with the energy storage lever 42,
and the end part of the connecting rod assembly 2 is connected with
the rotating shaft assembly 5 for driving the switching-on
operation and the switching-off operation. In the switching-on
process, the energy storage lever 42 hits the connecting rod
assembly 2, such that the end part thereof pulls the rotating shaft
assembly 5 to finish the switching-on operation. In addition, in
the switching-on process or the switching-off process, the
connecting rod assembly 2 and the cam assembly 3 are kept moving at
one side of the energy storage lever 42. The connecting rod
assembly and the cam assembly are arranged at one side of the
energy storage assembly. The energy storage assembly is located
above the connecting rod assembly and the cam assembly, thereby
ensuring that the energy storage assembly does not interfere with
the connecting rod assembly in the movement process, the energy
storage lever is mounted just by one energy storage mounting shaft
such that the overall structure is compact, and the reliability of
the energy storage assembly is improved. The problems of complicate
process and high cost of the prior art in which the the energy
storage mounting shaft needs to be cut off from the middle to
become two short shafts and then the two short shafts are riveted
to two sides of the energy storage assembly in order to keep the
connecting rod assembly away are avoided. The cam assembly 3 may be
driven by the driving shaft 30 to enable the cam 22 to jack the
driving end of the energy storage lever 42, such that the energy
storage lever 42 rotates to compress the energy storage spring 48
to finish energy storage. In addition, in the energy release
process, the movement direction of the riving en of the energy
storage lever 42 is opposite to the movement direction of the cam
33. The cam is in stable contact with the energy storage bearing,
thereby ensuring the stability of the energy storage process. The
movement direction of the cam is opposite to the movement direction
of the energy storage lever, such that the energy storage assembly
may not cause secondary hit to the cam assembly, and further the
cam assembly after the switching-off operation is accurate to
position, and the energy loss in the switching-on process is
reduced.
[0063] The energy storage lever 42 comprises at least two energy
storage mounting sheets 421 which are arranged side by side. The
energy storage mounting shaft 41 in FIG. 7 penetrates through the
energy storage lever 42 and may be rotatably connected with each
energy storage mounting sheet 421 in a hole-shaft manner. The
energy storage end of the energy storage lever 42 is
correspondingly connected with the energy storage mounting sheet
421 which may be connected to a connecting support 45 of the energy
storage spring 48. Preferably, the specific example of the energy
storage lever of the present invention is as shown in FIG. 7. The
energy storage lever 42 comprises two energy storage mounting
sheets 421 which are arranged side by side, and one energy storage
mounting shaft 41. The energy storage mounting shaft 41 penetrates
through the two energy storage mounting sheets 421 respectively,
and two ends of the energy storage mounting shaft 41 are fixed on
the side plate assembly 1. The connecting rod assembly 2 and the
cam assembly 3 are also arranged in the side plate assembly 1. The
hitting pin 44 which may be in contact and connection with the
hitting roller 24 on the connecting rod assembly 2 is arranged
between the two energy storage mounting sheets 421. In addition,
the end part of each energy storage mounting sheet 421 is provided
with an energy storage bearing 43 which may be in contact and
connection with the cam of the cam assembly 3. Compared to the way
in which the energy storage lever is connected and mounted from two
sides thereof via the two short shafts, the way in which only one
energy storage bearing is used has the advantages of high stability
and reliability, simple machining process and high assembly
efficiency. The energy storage mounting shaft 41 is not limited to
the above-mentioned method in which only one energy storage
mounting shaft is mounted in a penetrating manner. As shown in FIG.
30, it is also possible to mount the two energy storage mounting
sheets 421 on the side plate assembly 1 respectively by two energy
storage mounting shafts 41. Particularly, the energy storage lever
42 of the energy storage assembly 4 in FIG. 1 is lower than the
edges of the first side plate 11 and the second side plate 12. The
energy storage assembly is simple in mounting structure, occupies a
few space and facilitates the assembly and use of the operation
mechanism. Furthermore, each energy storage mounting sheet 421 is
arc-shaped, with two ends thereof being bent towards one side, one
side being provided with the energy storage bearing 43 and the
other end being connected with the energy storage spring 48 via a
spring connecting sheet. The energy storage mounting shaft 41 is
arranged in the middle of the energy storage mounting sheet 421.
The hitting pin 44 is arranged between the energy storage mounting
shaft 41 and the energy storage bearing 43.
[0064] The base support 46 in FIG. 7 is of a U-shaped structure and
comprises a base support sheet 461 which may be connected with the
end part of the energy storage spring 48. Base mounting sheets 47
which face with other are arranged at two sides of the base support
sheet 461. Each base mounting sheet 47 is provided with a support
guide rail 471 and a support mounting hole 473. The support guide
rail 471 is arranged at the end part of the mounting sheet 47. The
support mounting hole 473 corresponds to a guide rail terminal 472
of the support guide rail 471, and the support guide rail 471 and
the support mounting hole 473 are matched and connected with a
guiding shaft 13 mounted on the side plate assembly 1 and a support
positioning pin 14 respectively. The first side plate 11 and the
second side plate 12 are respectively provided with the guiding
shaft 13 and a positioning pin fixing hole 111 for mounting the
support positioning pin 14, wherein the guiding shaft 13 may be
matched and connected with the support guide rail 471, and the
support positioning pin 14 may pass through the positioning pin
fixing hole 111 and the support mounting hole 473 at the same time,
thereby mounting the base support 46 and the energy storage spring
48 of the energy storage assembly 4 on the side plate assembly 1.
In addition, the base mounting sheets 47 at two sides of the base
support 46 may be in contact and connection with the first side
plate 11 and the second side plate 12 respectively. The base
mounting sheets and the side plate assembly are in contact to
ensure that the base support does not shake after being mounted,
thereby improving the mounting stability of the base support.
Preferably, the guide rail terminal 472 may prop against the
guiding shaft 13 while the support mounting hole 473 and the
support positioning pin 14 are matched and connected. The support
positioning pins 14 are mounted in the positioning pin fixing holes
111 formed in the first side plate 11 and the second side plate 12,
respectively, and the surface of each support positioning pin 14 is
provided with a clamping groove 141. Meanwhile, the energy storage
spring 48 obliquely arranged relative to two sides of the base
support 46, and is connected to the energy storage end in a manner
of inclining from the base supporting sheet 461 to a direction
close to the rotating shaft assembly 5. Furthermore, the support
mounting hole 472 may be oval. The oval support mounting hole makes
the positioning pin have a certain margin during mounting, and
further makes the mounting process simple and convenient while
ensuring the mounting firmness. Particularly, the energy storage
assembly 4 comprises two energy storage springs 48 which are
arranged in the base support 46 side by side, a gap is provided
between the two energy storage springs 48, and the second
connecting rod 23 may be put in the gap in the energy storage
process.
[0065] When the energy storage assembly 4 is mounted, the energy
storage spring 48 is fixedly mounted on the base support 46 having
the U-shaped structure first, the support guide rail 471 on the
base mounting sheet 47 then props against the guiding shaft 13 of
the side plate assembly 1, next, the base support 46 is pushed till
the guide rail terminal 472 props against the guiding shaft 13 and
does not continue to slide any more, and the positioning pin fixing
holes 111 of the side plate assembly 1 at this moment correspond to
the centers of the support mounting holes 473, the support
positioning pin 14 sequentially passes through the positioning pin
fixing hole 1 l 1 and the support mounting hole 473 and a retainer
ring is clamped in the clamping groove 141 of the support
positioning pin 14, and therefore, the mounting of the energy
storage assembly 4 is completed. The energy storage assembly is
mounted in a simple way, effectively improves the assembly
efficiency of the energy storage operation mechanism, facilitates
the maintenance and replacement of the energy storage assembly and
improves the practicability of the device. Particularly, the base
support 46 is mounted to one end of the side plate assembly 1, the
base mounting sheets 47 at two sides of the base support 46 are
flush with the side edges at one end of the first side plate 11 and
at one end of the second side plate 12, and the base supporting
sheets 461 are located at one side of the side plate assembly 1,
which is connected to the circuit breaker. Furthermore, the energy
storage lever 42 is opposite to the base supporting sheet 461 of
the base support 46, forms an L shape with the energy storage
spring 48, and is arranged at one side of the side plate assembly 1
away from the circuit breaker.
[0066] The energy storage operation mechanism 99 further comprises
main tension springs 49, wherein one end of each main tension
spring 49 is fixedly connected with the energy storage mounting
shaft 41, and the other end thereof is fixedly connected with the
connecting pin 54 on the rotating shaft assembly 5. Specifically,
the first cantilever 51 of the rotating shaft assembly 5 is
provided with a connecting rod mounting hole 511, the end part of
the second connecting rod 23 of the connecting rod assembly 2 is
provided with a connecting rod driving hole 232, the connecting pin
54 may pass through the connecting rod mounting hole 511 and the
connecting rod driving hole 232 at the same time to connect and
mount the second connecting rod 23 and the first cantilever 51, and
two ends of the connecting pin 54 may be provided with the main
tension spring 49 respectively. Particularly, the energy storage
mechanism 99 comprises two main tension springs 49 which are
arrange at two sides of the first cantilever 51 respectively,
wherein two ends of each main tension spring 49 are fixedly
connected to the end part of the connecting pin 54 and the energy
storage mounting shaft 41 respectively. Furthermore, one end of
each of the main tension springs 49 is fixed on the rotating shaft
assembly 5, and the other end thereof is fixed on the corresponding
energy storage mounting shaft 41 between the two energy storage
mounting sheets 421. The energy storage mounting shaft 41 comprises
a first mounting shaft in the middle and two second mounting shafts
at two sides of the first mounting shaft, wherein the diameter of
the first mounting shaft is larger than that of each second
mounting shaft. The other end of each of the two main tension
spring 49 is mounted at the joint between each of the second
mounting shafts and the first mounting shaft. The two energy
storage mounting sheets 421 are mounted on the second mounting
shafts to limit the two main tension springs 49. The mounting
position of the main tension springs 49 not only makes the
structure compact, while not affecting the rotation of the energy
storage lever and facilitating the assembly and mounting of the
main tension springs. The fixed mounting position of the main
tension springs 49 on the energy storage mounting shaft 41 is not
limited to the above-mentioned embodiment, and the main tension
springs 49 may be fixedly mounted on the corresponding energy
storage mounting shaft 41 between the two energy storage mounting
sheets 421 or fixedly mounted on the corresponding energy storage
mounting shafts 41 at two sides of the two energy storage mounting
sheets 421.
[0067] The control assembly 6 comprises a switching-off half-shaft
61, a switching-off latch 62, a switching-on half-shaft 63, a
switching-on latch 64, a switching-on button 65 and a switching-off
button 66. The interlocking assembly 7 comprises an interlocking
guide rod 71, a switching-on guide rod 72, a switching-off guide
rod 73, a driving guide rod 74 and an energy storage indicator 75.
The switching-on guide rod 72 and the switching-off guide rod 73
are mounted in parallel. The switching-off semi-shaft 61, the
switching-off latch 62 and the switching-on half-shaft 63 are
mounted between the switching-on guide rod 72 and the switching-off
guide rod 73, and the switching-on half-shaft 63 is arranged
relatively perpendicular to one end of the switching-on guide rod
72, and the switching-off half-shaft 61 is arranged relatively
perpendicular to the other end of the switching-on guide rail 72.
The switching-off latch 62 is located between the switching-off
half-shaft 61 and the switching-on half-shaft 63. One end of the
switching-off latch 62 is connected to the middle part of the
switching-off half-shaft 61 in a latching manner.
[0068] One end of the switching-on half-shaft 63 is connected with
the switching-on latch 64 in a driving manner, and the other end
thereof and the driving guide rod 74 face each other. The
switching-on guide rod latch 724 at one end of the switching-on
guide rod 72 may be provided between the switching-on half-shaft 63
and the driving guide rod 74. At this moment, the switching-on
button 65 is pushed to drive the switching-on half-shaft 63 to
rotate via the driving guide rod 74 and the switching-on guide rail
72, thereby driving the switching-on latch 64 to be tripped from
the cam assembly 3, such that the energy storage assembly 4
releases energy to drive the connecting rod assembly 2 to realize
the switching-on operation. When the switching-on guide rod latch
724 is arranged at the side where the switching-on half-shaft 63
and the driving guide rod 74 are located, the switching-off button
65 fails and cannot act on the switching-on half-shaft 63 through
the driving guide rod 74. The interlocking guide rod 71 is mounted
on the driving shaft 30. One end of the interlocking guide rod 71
may be in contact and connection with the rotating shaft assembly 5
and the energy storage indicator 75, and the other end thereof is
in contact and connection with the switching-on guide rod 72. In
the switching-off energy storage state, the energy storage
indicator 75 makes the interlocking guide rod 71 not limit the
switching-on guide rod 72, and the switching-on guide rod 72 resets
and rotates under the action of a switching-on guide rod spring,
such that the switching-on guide rod latch 724 is provided between
the driving guide rod 74 and the switching-on half-shaft 63. Under
the other three states, both the rotating shaft assembly 5 and the
energy storage indicator 75 can drive the switching-on guide rod 72
to move through the interlocking guide rod 71, such that the
switching-on guide rod latch 724 is arranged at the side where the
driving guide rod 74 and the switching-on half-shaft 63 are
located, and therefore the switching-on button fails.
[0069] One end of the switching-off latch 62 is connected with the
switching-off half-shaft 61 in a latching manner, and the other end
thereof is connected with the connecting rod assembly 2 in a
latching manner. One end of the switching-off guide rod 72 is in
contact and connection with the end part of the switching-off
half-shaft 61, and the other end of the switching-off guide rod 72
is connected with the switching-off button 66 in a driving manner.
Under the switching-on state, when the switching-off button 66 is
pushed, the switching-off guide rod 73 drives the switching-off
half-shaft 61, such that the switching-off latch 62 is tripped from
the connecting rod assembly 2, and the rotating shaft assembly is
driven by the connecting rod assembly 2 to realize the
switching-off operation. Meanwhile, one end of the switching-off
half-shaft 61 is in contact and connection with the switching-off
guide rod 73, and the other end thereof may be in contact and
connection with a switching-on guide rod limiting boss 725 of the
switching-on guide rod 72, such that when the switching-off button
66 is pushed or the switching-off half-shaft 61 is directly pushed,
the switching-off half-shaft 61 can drive the switching-on guide
rod 72 to move, such that the switching-on guide rod latch 724 is
arranged at the side where the driving guide rod 74 and the
switching-on half-shaft 63 are located, and therefore the
switching-on button fails to realize interlocked protection.
[0070] Specifically, the switching-off half-shaft 61 in FIG. 12 is
provided with a semicircular plane 611 matched with the
switching-off latch 62. One end of the switching-off half-shaft 61
is provided with a switching-off half-shaft limiting plane 612
matched with the switching-on guide rod 72, a switching-off
half-shaft interlocking shaft 613, a switching-off half-shaft
spring hanging hole 614 (as shown in FIG. 26) and a switching-off
half-shaft driving plane 616 matched with the tripping system of
the circuit breaker, and the other end of the switching-off
half-shaft 61 is provided with a switching-off plane 615 matched
with the switching-off guide rod 73.
[0071] A latch tail end 623 at one end of the switching-off latch
62 in FIG. 13 may be in contact and connection with the
switching-off half-shaft 61, and the other end of the switching-off
latch 62 is provided with a latch bearing 622 which is connected
with the U-shaped groove 213 in a limiting manner. The
switching-off latch 62 is mounted on a switching-off latch fixing
shaft 620. A positioning sleeve (not shown in drawings) for
positioning and mounting the interlocking guide rod 72 is also
arranged on the switching-off latch fixing shaft 620, and a latch
spring 621 is also hung to one end of the latch tail end 623.
[0072] One end of the switching-on half-shaft 63 in FIG. 14 is
provided with a semicircular switching-on plane 631, and the other
end thereof is provided with a switching-on boss 623, a
switching-on limiting shaft 633 and a switching-on half-shaft
spring hanging hole 634. The switching-on boss 632 may be connected
with the switching-on guide rod 72 and the switching-on latch 64 in
a driving manner. The semicircular switching-on plane 631 may be in
contact and connection with the end part of the switching-on latch
64. The edge of the switching-on latch 64 may be connected with a
cam roller 35 in a latching manner.
[0073] The switching-on latch 64 in FIG. 15 is triangular and
provided with a switching-on latch mounting hole 641 in the middle,
wherein a switching-on latch driving portion 642 matched with the
switching-on half-shaft 63, a switching-on latch energy storage
portion 643 matched with the cam roller of the cam assembly 3 and a
switching-on latch spring hook 644 for connecting a switching-on
latch spring are arranged at three corners of the switching-on
latch 64 respectively. A switching-on latch energy storage portion
645 which is matched with the cam assembly 3 is arranged between
the switching-on latch energy storage portion 643 and the
switching-on latch spring hook 644. In the energy storage process,
the switching-on latch energy storage portion 643 of the
switching-on latch 64 is in contact and connection with the cam
roller 35 of the cam 33 of the cam assembly 3. In the energy
release process, the switching-on latch energy release portion 645
of the switching-on latch 64 is kept away from the cam roller 35 of
the cam 33 of the cam assembly 3. In the switching-on process, the
switching-on half-shaft 63 rotates, such that the semicircular
switching-on plane 631 is in contact fit with the switching-on
latch driving portion 642 of the switching-on latch 64, and
therefore the switching-on latch 64 is tripped from the cam
assembly 3 to further trigger the subsequent switching-on
action.
[0074] An interlocking guide rod positioning hole 711 which is used
for mounting the interlocking guide rod 71 to the driving shaft 30
is formed in the middle of the interlocking guide rod 71 in FIG.
16. A shaft sleeve 37 is also arranged between the interlocking
guide rod positioning hole 711 of the interlocking guide rod 71 and
the driving shaft 30. The interlocking guide rod 71 is capable of
rotating around the shaft sleeve 37. The interlocking guide rod is
arranged on the driving shaft through the shaft sleeve, without an
additional rotating shaft, and therefore the mounting position is
reasonable. Two ends of the interlocking guide rod 71 are provided
with a limiting portion and a driving portion respectively, wherein
the limiting portion is provided with a curved interlocking guide
rod surface 712 which is in contact and connection with the energy
storage indicator 75 and the rotating assembly 5 respectively. The
end part of the curved interlocking guide rod surface 712 is also
provided with a circular interlocking guide rod surface 712 which
may be in contact and connection with the end part of the energy
storage indicator 75. The driving portion is provided with a
cylindrical interlocking guide rod surface 714 which may be in
contact and connection with the switching-on guide rod 72, and the
interlocking guide rod 71 is also provided with an interlocking
guide rod spring hanging hole 715 which is used for mounting an
interlocking guide rod resetting spring. Particularly, the energy
storage indicator 75 and the rotating shaft assembly 5 are arranged
at two sides of the limiting position of the interlocking guide rod
71 respectively, and the curved interlocking guide rod surface 712
is arranged in a manner of inclining from the rotating shaft
assembly 5 to the energy storage indicator 75.
[0075] The switching-on guide rod 72 in FIG. 17 is provided with a
switching-on guide rod positioning hole 721 which is used for
positioning and mounting the switching-on guide rod 72 onto the
switching-off latch fixing shaft 620. The switching-on guide rod
positioning hole 721 is of an oval structure and is capable of
moving relative to the switching-off latch fixing shaft 620. The
top of the switching-on guide rod 72 is provided with a
switching-on slope 722 which may be in contact and connection with
the cylindrical interlocking guide rod surface 714 of the
interlocking guider rod 71. The switching-on slope 722 is arranged
at the inclined top of the switching-on guide rod positioning hole
721 and located between the switching-on guide rod positioning hole
721 and the switching-on guide rod limiting boss 725. A
switching-on guide rod spring hook 723 for mounting the
switching-on guide rod spring is arranged at the bottom of the
switching-on guide rod 72. The switching-on guide rod spring hook
723 is located between the switching-on guide rod positioning hole
721 and the switching-on guide rod limiting boss 725. One end of
the switching-on guide rod 72 is provided with a switching-on guide
rod latch 724 which is in contact and connection with the
switching-on half-shaft 63 and the driving guide rod 74
respectively. The switching-on guide rod latch 724 is in a shape of
an upwards warped hook. A groove for accommodating the switching-on
half-shaft 63 is formed between the switching-on guide rod latch
724 and the switching-on guide rod positioning hole 721. An outside
wall of the switching-on guide rod latch 724 is provided with a
switching-on guide rod latch slope 7241 which is matched and in
contact and connection with a driving guide rod protrusion 741 of
the driving guide rod 74. The switching-on boss 632 of the
switching-on half-shaft 63 corresponds to the driving guide rod
protrusion 741 which is arranged at the end part of the driving
guide rod 74 in FIG. 19, and the switching-on guide rod latch 724
may be arranged between the switching-on boss 632 and the driving
guide rod protrusion 741. The other end of the switching-on guide
rod 72 is provided with a switching-on guide rod limiting boss 725
which is in contact and connection with the switching-off
half-shaft 61. The section of the switching-on guide rod limiting
boss 725 is circular or oval. A switching-on guide rod groove 726
is arranged between the switching-on guide rod limiting boss 725
and the switching-on slope 722. The switching-off half-shaft 61
passes through the switching-on guide rod groove 726.
[0076] One end of the switching-off guide rod 73 in FIG. 18 is a
switching-off guide rod trigger end 731 which is in contact and
connection with the switching-off button 66, and the other end of
the switching-off guide rod 73 is a switching-off guide rod driving
end 732 which is in contact and connection with the switching-off
plane 615 of the switching-off half-shaft 61. In addition, the
switching-off guide rod 73 is also provided with a switching-off
guide rod limiting groove 733 configured to guide and limit and a
switching-off guide rod spring hook 734 configured to pull and
reset.
[0077] The driving guide rod 74 in FIG. 19 comprises a driving
guide rod mounting frame 742. A driving guide rod mounting hole is
formed in the middle of the driving guide rod mounting frame 742,
and the side edge of the driving guide rod mounting frame 742 is
provided with a driving guide rod spring hole 743 which is used for
hanging a driving guide rod resetting spring. The side surface of
the driving guide rod mounting frame 742 is provided with a driving
guide rod protrusion 741 which is matched with the switching-on
button 65 and the switching-on guide rod 72.
[0078] An indicator positioning hole 751 which is connected with
the driving shaft 30 is formed in the middle of the energy storage
indicator 75. One end of the energy storage indicator 75 is
provided with a circular indicator surface 752 which is in contact
and connection and the disc 34, and the other end of the energy
storage indicator 75 is provided with an indicator plane 753 which
is in contact and connection with the curved interlocking guide rod
surface 712. The edge of the energy storage indicator 75 is also
provided with an curved indicator surface 754 which is in contact
and connection with the circular interlocking guide rod surface 713
at the end part of the curved interlocking guide rod surface 712.
In addition, the edge of the energy storage indicator 75 is also
provided with an indicator spring hook 755 for mounting an
indicator spring.
[0079] The specific action states of various assemblies of the
energy storage operation mechanism 99 of the present invention in
the switching-on process or the switching-off process are as
follows: switching-off energy storage, switching-off energy
storage, switching-on energy release and switching-on energy
storage.
[0080] During the switching-off energy release, when the energy
storage operation mechanism 99 is in the switching-off energy
release state, there is no elastic extrusion and connection between
the cam assembly 3 and the energy storage assembly 4 as shown in
FIG. 29, and meanwhile, there is no latching connection between the
end part of the switching-on latch 64 and the cam roller 35 of the
cam 33. When the control assembly 6 and the interlocking assembly 7
in FIG. 23 are in the switching-off energy release state, the
circular interlocking guide rod surface 713 pushes the indicator
plane 753 of the energy storage indicator 75, the circular
indicator surface 752 pushes a circular surface 341 of the disc 34,
the switching-on slope 722 of the switching-on guide rod 72 is
pushed by the cylindrical interlocking guide rod surface 714 of the
interlocking guide rod 71, and the switching-on guide rod latch 724
at this moment is located at the side where the switching-on boss
632 and the driving guide rod protrusion 741 are located, and is in
contact and connection with two of them. When the connecting rod
assembly 2 as shown in FIG. 20 is in the switching-off energy
release state, the hitting pin 44 on the energy storage assembly 4
extrudes the hitting roller 24, a connecting rod connecting pin 216
is located above the connecting rod driving hole 232 and the jump
pin connecting end 214, the latch bearing 622 props against a first
jump pin contour surface 212, the jump pin spring 25 is in a
tensile energy storage state, and the rotating shaft assembly 5 is
located in a switching-off position and the main tension spring 49
is in a contracted energy release state. The switching-off latch 62
of the control assembly 6 enables the latch bearing 622 mounted at
one end of the switching-off latch 62 to be in contact and
connection with the first jump pin contour surface 212 at one side
of the jump pin 2 under the action of the latch spring 621, and
meanwhile, a latch tail end 623 at the other end of the
switching-off latch 62 props against a semicircular plane 611 in
the middle of the switching-off half-shaft 61.
[0081] During the switching-off energy storage, when the control
assembly 6 as shown in FIG. 24 and the interlocking assembly 7 are
in the switching-off energy state, the circular indicator surface
752 of the energy storage indicator 75 falls into a disc notch 342,
the circular interlocking guide rod surface 713 of the interlocking
guide rod 71 is in contact and connection with the curved indicator
surface 754 of the energy storage indicator 75, and the end part of
the interlocking guide rod 71 at this moment swings till the
interlocking guide rod 71 does not limit the switching-on guide rod
72 when corresponding to the end part of one side of the
switching-on slope 722, and the switching-on guide rod 72 resets
and rotates via a switching-on guide rod spring, such that the
switching-on guide rod latch 724 of the switching-on guide rod 72
is placed between the switching-on boss 632 and the driving guide
rod protrusion 741, thereby finishing the preparation work before
the switching-on operation. Particularly, when the energy storage
operation mechanism 99 as shown in FIG. 25 is in the switching-off
energy storage state, the switching-off button 66 is pushed or the
switching-off half-shaft 61 is pushed directly, the switching-on
guide rod limiting boss 725 of the switching-on guide rod 72 is
pushed by the switching-off half-shaft limiting plane 612 of the
switching-off half-shaft 61, such that the switching-on guide rod
latch 724 may return to the side where the switching-on boss 632
and the driving guide rod protrusion 741 are located again, and the
switching-on button 65 at this moment fails. The cam assembly 3 as
shown in FIG. 28 pushes the energy storage bearing 43 in the energy
storage assembly 4, such that one end, where the bearing energy
bearing 43 is mounted, of the energy storage lever 42 moves upwards
and extrudes the energy storage spring 48 at the other end at the
same time to store energy, and the end part of the switching-on
latch 64 is connected with the cam roller 35 of the cam 33 in a
latching manner. When the connecting rod assembly 2 as shown in
FIG. 21 is in the switching-off energy storage state, the energy
storage assembly 4 finishes energy storage, such that the hitting
pin 44 does not extrude the hitting roller 24 again. The jump pin
spring 25 releases energy, thereby driving the jump pin 21 to
rotate relative to the driving shaft 30. The latch bearing 622
slides along the first jump pin contour surface 212 towards the
U-shaped groove 213, till the latch bearing 622 falls into the
U-shaped groove 213 and is in contact with a lower U-shaped groove
plane 2131, and the connecting rod connecting pin 216 at this
moment is still located above the connecting line between the
connecting rod driving hole 232 and the jump pin connecting end
214, and the main tension spring 49 is in a contracted energy
release state. The jump pin 21 at this moment is limited by the
switching-off latch 62, and the latch tail end 623 of the
switching-off latch 62 moves to a position below the switching-off
half-shaft 61.
[0082] During the switching-on energy release, when the energy
storage operation mechanism 99 is in the switching-off energy
storage state and the switching-off button 66 or the switching-off
half-shaft 61 is not pushed, the switching-on button 65 is pushed
to drive the driving rod protrusion 741 to be in contact and
connection with the switching-on guide rod latch slope 7241 on the
switching-on guide rod latch 724 and drive the switching-on guide
rod latch 724 to drive the switching-on half-shaft 63 to turn
around a tripping position, and further the switching-on latch 64
is tripped from the cam roller 35, the energy storage spring 48
releases energy, and the hitting pin 44 pushes the connecting rod
assembly 2 and the rotating shaft assembly 5 to finish the
switching-on process. When the control assembly 6 and the
interlocking assembly 7 as shown in FIG. 26 is in the switching-on
energy release process, the second cantilever 52 presses the curved
interlocking guide rod surface 712 of the interlocking guide rod
71, the cylindrical interlocking guide rod surface 714 pushes the
switching-on slope 722 of the switching-on guide rod 72, and the
switching-on guide rod latch 724 at this moment is located at the
side where the switching-on boss 632 and the driving guide rod
protrusion 741 are located again and is not in contact and
connection with two of them, and the circular indicator surface 752
of the energy storage indicator 75 pushes the circular surface 341
of the disc 34 again. When the connecting rod assembly 2 as shown
in FIG. 22 is in the switching-on energy release state, the energy
storage assembly 4 releases energy, and the hitting pin 44 hits the
hitting roller 24, such that the connecting rod connecting pin 216
is positioned below a connecting line of the connecting rod driving
hole 232 and the jump pin connecting end 214, and the upper
U-shaped groove plane 2132 is in contact with the latch bearing
622, the connecting rod driving hole 232 pulls the rotating shaft
assembly 5 to rotate by the connecting pin 54, and meanwhile, the
main tension spring 49 is in a tensile energy storage state, and
the rotating shaft assembly 5 drives the contact system 96 to be
switched on during rotation.
[0083] During the switching-on energy storage, the control assembly
6 as shown in FIG. 27 and the interlocking assembly 7 are in
switching-on energy storage state, the circular indicator surface
752 of the energy storage indicator 75 falls into the disc notch
342 again, and other interlocking state is the same as the
switching-on energy release state. In addition, the switching-on
guide rod latch 724 is positioned at the side where the
switching-on boss 632 and the driving guide rod protrusion 741 are
located and is not in contact and connection with two of them, and
the switching-on button 65 fails.
[0084] From the above, the connecting rod assembly 2 and the cam
assembly 3 are mounted at one side of the energy storage assembly
4, and therefore, the movement direction of the energy storage
assembly 4 is opposite to that of the cam assembly 3 in a
switching-on process, and may not cause second hit to the cam
assembly 3. After the switching-off operation, the cam assembly 3
is positioned more accurately and stably, and the energy loss of
the switching-on process is reduced, the use efficiency is
improved, and the structure is compact. However, when the existing
energy storage operation mechanism is switched on, the movement
direction of the energy storage assembly is the same as that of the
cam assembly, and the potential danger of secondary hit will be
caused.
[0085] In addition, under the condition that the energy storage
operation mechanism 99 is in the switching-off energy storage state
and the switching-off button 66 or the switching-off half-shaft 61
is not pushed, the switching-on guide rod latch 724 can enter the
space between the switching-on boss 632 and the driving guide rod
boss 741, and the switching-on button 65 is effective. Under any
state, the switching-on guide rod latch 724 is located at the side
where the switching-on boss 632 and the driving guide rod
protrusion 741 are locate, and the switching-on button 65 fails.
The switching-on guide rod latch slope on the switching-on guide
rod latch at one end of the switching-on guide rod always presses
the switching-on half-shaft in the switching-on process, and
therefore the reliability of the switching-on process is improved.
The switching-on guide rod limiting boss at the other end of the
switching-on guide rod can ensure that the energy storage operation
mechanism makes the switching-on button fail under the condition
that it is in the switching-off energy storage state or the
switching-off button or the switching-off half-shaft is not pushed,
and therefore the use safety of the energy storage operation is
improved. Meanwhile, the interlocking guide rod realizes up-down
linkage of the rotating shaft assembly and the control assembly,
such that the energy storage operation mechanism is compact in
structure and improves the use efficiency.
[0086] The above content is a further detailed description of the
present invention in conjunction with specific preferred
embodiments, and it should not be considered that the specific
implementation of the present invention is limited to these
descriptions. Those common skilled in the art may also make some
simple deductions or replacements without departing from the
concept of the present invention, all of these should be considered
to fall into the protection scope of the present invention.
* * * * *